Ventilating stop and lock for windows.



R. B. HOERMANN. VBNT ILATING STOP AND LOOK POR WINDOWS.

APPLIOATION FILED FEB": 9, 1910 Patented Nov. 8, 1910.

/vibmeomm v f Wm 5 ftThUlZtE sits RUDOLPH B. HQERMANN, F WATERTOWN, WISCONSIN.

VENTILATING STOP AND LOCK FOR WINDOWS.

State of Wisconsin, have invented new and useful Improvements in Ventilating Stops and. Locks for Wmdows', of which the following is a specification.

My invention relates to improvements in ventilating stops for windows.

The object of my invention is to provide a form ofstopwhich will limit the movement, of the sashes and which cannot be pried ofl' from the supporting sash whenin position of use.

A; further object of my invention is to provide a fonm'of device, which may be locked in a position of non use, and when released will be automatically swung to its proper holding position, and which will not be permitted to engage back of or interfere with the sash cords.

In the following description, reference is had to the accompanying drawings, in which-e Figure 1 is a perspective view of a wini dow. embodying my invention. Fig. 2 is an edge View of the meeting portions of two I sashes showing my invention in position 0t use. Fig. 3 is a perspective-view of my'in- 'vention as it appears when detached from the sash. Fig. 4- is a plan view of the same as it is applied to the sashes and in position of use, with dotted lines indicatingthe posi tion of non use, the portion ofthe upper v sash and of a window casing being shown in cross section. Fig. 5 is a sectional view .of my invention drawn transversely of the hinge pintle and through the holding catch.

Like parts are identified bythe same ref- 1 erence characters thronghout the several views. r

A pair of plates A and B are connected together by a pintlc (l in a manner similar to that by which the leavesof an ordinary.

hinge are connected. The plateA is longer than the plate B and is connected with the pintle C above and below the plate B, the

latter being connected with the central -por-' tion of the pintle. The portions of the plate A which extend beyond the upper and lower margins oihthe plate Bare provided with screw holes I) and acentrally disposed spring E is coiled about the pintle G in its own individual place with its ends bearing upon the plates A and B respectively.

Specification of Letters Patent. 7 Application filed- February 9, 1910,v Serial No. 542,928.

vided with an inturned lip F, which is adapted to engage over-the outer margin of the plate A, this plate being preferably made Wider in its central portion than in its end portions. When the plate B is closed upon the plateA, as shown in 5, the lip F engages resiliently over the margin of the plate Gnand holds the two plates in closed position against the tension of the spring E, but when the lip Patented Nov. a, ism.

' The outernrargin of the plate B is pro F is pressed outwardly,

said plates will immediately swing to open position at right angles to each other, as illustrated'in Fig. 3. I The plate A is secured to the upper. sash? H by screwsiinserted through the holesl) and into one ott the side rails of the upper sash at a point a few inches above .the lower margin of'such sash.

In this position, the plate B may extend across the upper margin of the lower sash I or across the path ofxsuch sash, when the latter is raised. The plate B is of suflicientwidth to extend beyond the sash cord J of the-lower sash, I having found that if this plate is permitted topass behind the cord,

an attemptto lift the lower sash will cause the sash to split out between thecord groove and: the outer face of the side rail. Th3 plate A is so'adjusted to the upper sash rai l that the margin, G will projectslightly be yond the inner face. thereof, thus permitting access to the lip F, which extends inwardly in the direction of the glass, when the de' vice is :toldedv to position of non use. f

It: Will be observed that when the sashes are in open position, as indicated in Fig. 2, with the lowersash abutting the member B, it will not be possible to insert a tool bevtween the glass K of the lower sash and the foot piece L of the upper sash; for the purpose of prying plate A away from the sash- H,'s ince plate A, which is fastened to'sash H with round head'screws, is in absolute contact with the sash I.' The spring C also serves to prevent the manipulation of the locking plate B to closed position on the supporting plateG, by the insertion of a toolbetween the footpieceor check rail L and the glass of the lower sash. I attach great importance to these features of my invention, which enable me to provide a sate lock that cannotbe tampered with from the exterior. J

By having the plate A extend both above and below the plate B, it is obvious that the device'is reversible and capable. ofbeingjap I plied interchangeably to either side rail of the upper sash, since either end of the device will extend downwardly'below the upper margin .of the lower sash, when in a 5 proper position, end the lower sesh willthus prevent the device from'beingdlslodged.

' I claim as new, end desire to secure by Lett rs Patent, is'- J I hecombination with a pair of cooperating window sashes, of a supporting plate secured to the side rail of one of said sashes, a stop plate of less Width in its Vertical dimension'hing'ed to one margin of the first men- 15 tioned plate and adapted to extend cros's the pat of the other sash to a position be- Having thus described my lnvention, What yond the sash cord of such other sash, said, supportmgplate belng secured to said side rail at points above and below the stop plate,

a spring hinged to automatically swing the 2) stop plate to operative position, and acatch adapted, in one position of adjustment, to hold the stop plate in a folded -position by engaging the inner margin-0f the supportmg plate. j 25 In testimony whereof I aflix my signaturein the presence of two witnesses.

RUDOLPH B. HOERMANN.

Witnesses Enw. F. 'WIEMAN', FRANK O. MOULDING. 

